12/15/2018 - I drive a 28' Class A towing a 10' enclosed utility trailer. I stayed in the lot directly across Las Vegas Blvd. from the Stratosphere with no issues. I did not check in with security. I was in Thousands Trails Resort my 14 days then 7 days out. I stayed a number of days over several months. I saw several of the same RVs there each time. They must almost live there. There were a couple of homeless in the alley to the East but I walked my dog on the gravel strip near the Alley and had no problem.
We saw the rigs in the lot from the top of the tower and went to ask security if overnight parking was ok. The security guard said that two to three nights was ok but after that you had to register with the hotel desk and with security.